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Traceless Removal of Two Kernel Atoms in a Gold Nanocluster and Its Impact on Photoluminescence.

Yue ZhouLingwen LiaoShengli ZhuangYan ZhaoZibao GanWanmiao GuJin LiHaiteng DengNan XiaZhikun Wu
Published in: Angewandte Chemie (International ed. in English) (2021)
Removing or adding kernel atoms of metal nanoclusters (NCs) without leaving a trace is a substantial challenge because the kernel atoms are inside and covered by the outer staples. However, such kernel tuning is very important for improving the properties and acquiring an in-depth understanding of the kernel-property correlation. Photoluminescence (PL) is one of the most intriguing characteristics of metal NCs but has not been well understood until now. Inspired by these challenges/questions, we conducted this study and, for the first time, achieved the traceless removal of two kernel atoms in a gold nanocluster by applying a simple thermal treatment and revealed its impact on PL. Further, we demonstrated that the kernel Au-Au bond length can be an indicator for a comparison of the PL or kernel charge state between nanoclusters with similar kernel structures and sizes.
Keyphrases
  • sensitive detection
  • quantum dots
  • energy transfer
  • high resolution
  • mass spectrometry
  • risk assessment
  • heavy metals
  • gold nanoparticles
  • combination therapy
  • silver nanoparticles